git-asf

#!/bin/bash

usage()
{
    echo "Usage: git asf commit <SHA>"
    exit
}

# Returns non-0 if the remote doesn't exist
check_remote()
{
    git config remote.$1.url 2>&1 > /dev/null
}

# Clean up temp stuff created by script
finish()
{
    # Delete _asf remote if exists
    if check_remote _asf
    then
        git remote rm _asf
    fi
}
trap finish EXIT

cd_to_root()
{
    cd `git rev-parse --git-dir`/..
}

asf_commit()
{
    cd_to_root

    branch=master
    while getopts "b:" OPTION
    do
        case $OPTION in
            b)
                branch=$OPTARG
                ;;
        esac
    done
    shift $((OPTIND-1))

    # Fetch latest from gerrit
    if ! check_remote gerrit
    then
        echo "Remote 'gerrit' does not exist - please run 'git gerrit init'"
        exit 2
    fi
    echo "Fetching latest state from Gerrit"
    git fetch gerrit || exit 5

    # Add temporary remote to ASF, including tracking only the target branch and fetching
    if ! check_remote _asf
    then
        project=`basename $(git ls-remote --get-url gerrit)`
        git remote add _asf -t $branch "https://git-wip-us.apache.org/repos/asf/$project"
    fi
    echo "Fetching latest state from `git ls-remote --get-url _asf`"
    git fetch _asf || exit 5

    # Ensure that the SHA argument exists
    sha=`git rev-parse --quiet --verify $1`
    if [ -z "$sha" ]
    then
        echo "Commit '$1' does not exist!"
        exit 3
    fi

    # Ensure that the commit we've been given has already been submitted to Gerrit
    if ! git branch --quiet -r --contains $1 | grep -q gerrit/$branch > /dev/null
    then
        echo "Commit '$1' has not been submitted to branch $branch in Gerrit."
        exit 10
    fi

    # Ensure that the tip of the _asf branch is a parent of the SHA
    asf_tip=`git rev-parse --quiet --verify remotes/_asf/$branch`
    if ! git log -1 --pretty=%P $sha | grep $asf_tip 2>&1 > /dev/null
    then
        echo "SHA '$sha' is not a direct child of the ASF tip!"
        exit 10
    fi



    # Finally, all's well - push
    echo "Pushing $sha to ASF"
    git push _asf $sha:refs/heads/$branch

}

# First argument is sub-command
case "$1" in
    "commit" )
        shift
        asf_commit $@
        ;;
    * )
        usage
        ;;
esac